Primary meristems are located in the ________ of the plant?
A. dermal tissue
B. vascular tissue
C. woody stem
D. root and stem tips
E. stem tip only
D. root and stem tips
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In the phospholipase C signal transduction pathway, which are second messengers?
a. phospholipase C and G protein b. PIP2 and IP3 c. cAMP and IP3 d. phospholipase C and protein kinase A e. IP3 and DAG
The property of a test to detect only a certain antibody or antigen and not to react with any others is ________.
A. precipitation B. specificity C. sensitivity D. cross-reaction E. agglutination
Franklin's assignment at Cambridge was to investigate the structure of ____.
A. proteins B. ultraviolet radiation C. DNA D. embryonic fluid E. lipids
Physicians have used imaging techniques for medical diagnosis for some time, but recently have begun usage of magnetic resonance imaging (MRI), which depends on _____.
A. ultrasound B. X-rays C. the behavior of hydrogen atoms in water molecules in a strong magnetic field D. sound waves